En realidad , el "No puedo encontrar mi libro", implica que existe algún evento que impida encontrar el libro. What does it mean?. There's something external, an ability , or a circumstance that provoque that you can't find the book. and the other hand "No encuentro el libro" it's not that explicit . It doen't give so much information , why you can not find it. I hope this help!

En realidad , el "No puedo encontrar mi libro", implica que existe algún evento que impida encontrar el libro. What does it mean?. There's something external, an ability , or a circumstance that provoque that you can't find the book. and the other hand "No encuentro el libro" it's not that explicit . It doen't give so much information , why you can not find it. I hope this help!